package demo4;

public class keyboard implements Usb{

    @Override
    public void OpenDevise() {
        System.out.println("打开键盘");
    }

    @Override
    public void CloseDevise() {
        System.out.println("关闭键盘");
    }
    public void pr(){
        System.out.println("输入功能");
    }
}
